** Description changed:

+ [Impact]
+ Some Intel SoC-based systems.
+ 
+ [Test cases]
+ 1) Boot an affected system.
+ 
+ [Regression potential]
+ Some systems may rely on the current state of the timer selection in order to 
be able to boot successfully, or to catch key presses before the end of a 
timeout in the menu.
+ These systems may then fail to boot correctly, stuck in a timeout of crashing 
in grub. The new default, pmtimer, should be available on all ACPI-capable 
systems without being power-gated such as for the PIT, so the impact of this 
possible regression is minimal.
+ 
+ ---
+ 
  Fail to boot into Ubuntu GRUB on the platforms which legacy(8254) timer 
function is disabled.
  "8254 clock gating" is provided to disable 8254 timer to get rid of legacy 
and save power. The platforms with the firmware which disable the 8254 timer 
will fail to boot up and block on grub2 which uses the 8254 timer to calibrate 
the TSC.
-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1734278

Title:
  Grub2 cannot boot up when 8254 time function disable

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1734278/+subscriptions

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to